Propagation and Stocks
The usual method of propagation is by budding and grafting. The stocks on which the different varieties are grafted are raised from stones. Mr Pearson states that six kinds of stocks are used in the best nurseries—i.e. the common plum, the Brussels, the Mussel, the Brompton, the Damas Noir or St Julien, and the Myrobalan. The secret of success is to work the stock with a variety which is of common parentage. Nearly all plums will grow upon the common plum stock, though some of them thrive much better upon other stocks. Prince Englebert and Diamond flourish upon Mussel, but not upon the Brompton. Belgian Purple will not grow upon either Brussels or common plum, but succeeds upon Damas Noir, Mussel, or Myrobalan. The accurate knowledge required points to the wisdom of purchasing trees only from nurserymen who make such trees a specialty.
The late Archdeacon Lea in his excellent book "Small Farms" dwells strongly on the folly of buying cheap stuff. Trees on unsuitable stocks or not true to name bring bitter disappointment after a few years. "Never purchase trees because they are cheap. Visit the nurseries, and pick out trees with clean healthy bark, even though they are smaller than others." If you cannot go or send a reliable man, write in good time and get an early choice. Select and accept only young trees not more than two or three years' old. Budded trees are better than those grafted, as a general rule, the union being better; indeed grafting is usually adopted because budding has failed. In trees that have been budded, there will probably be less gumming.
Planting is a matter of supreme importance, but the rules for pears and plums are very much the same. Especial care must be taken if the soil is heavy and loaded with moisture. Put the trees on arrival in a trench (see before), and wait until the ground is fit and the soil as fine as possible so that the roots may run freely through it. Get the stakes ready and place them in position before planting. Bind the tree, if tall, at once when planted to the stake by soft willow twigs or other means, taking every care that the bark is not rubbed by the stake. Old cloth or carpet may be used for this purpose, tarred twine or cord being passed round it. Dry stakes well tarred, often last as long as they are needed.
What is your Object?
What is your object? Before choosing varieties, or planting, it is advisable to ask yourself, what is my object? On the answer the form of plantation and the choice of trees must depend. If for a private house only, the answer is easy. Then comes the question, Is there a wall, and if so, what is the soil and the aspect? Is there an Orchard House? If for market, for what market are you preparing? In the Midlands, the Pershore (= Gisborne's) is a great favourite; in London, the Early Orleans and the Egg Plum; in the North, the Black Diamond, the Wydale and others. In planting damsons the same question should be put. The Midland people won't have the Farleigh Prolific so popular in Kent, and they are right; the Shropshire folks think their damson the best of all and many agree with them. Are you near a jam factory? What plums do they desire or require? Local circumstances and wants should have great weight. If you are near a wood and birds are numerous, you may be wise in not growing greengages, yet otherwise they may be the best sort for a large outlay as the demand for them is universal.
Plums for a Private Garden
Let us suppose that the soil is fairly good; the choice of trees is not difficult. We have a selection made in 1892 by a committee of the R.H.S., consisting of forty experts, and their choice has been confirmed in a remarkable degree by a report of the trial of plums at the Chiswick Garden of the R.H.S. in 1901. At this trial on a soil that in a good year is said to suit them generally, ninety-five varieties were tested, and a good account was given of the following ten:—
Plums for Eating.